At last! My recent graphics practical has had me doing work in the realms of elementary ray tracing (ie: Whitted Ray Tracing). It is the first time I have ever worked with ray tracing concepts and I must admit that they are quite simple.
Recursively bouncing rays around a mathematically described scene is far simpler than the endless transformations and steps that one has to worry about with rasterisation…and the results complete with perfect reflections and refractions speak for themselves:
When this algorithm was developed some 30 odd years ago, it took the technology of the time 74 minutes to produce the above image. Today it takes less than a second